102443525 has 6 divisors (see below), whose sum is σ = 127030002. Its totient is φ = 81954800.

The previous prime is 102443521. The next prime is 102443533. The reversal of 102443525 is 525344201.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 20124196 + 82319329 = 4486^2 + 9073^2 .

It is not a de Polignac number, because 102443525 - 2² = 102443521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102443494 and 102443503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102443521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2048846 + ... + 2048895.

It is an arithmetic number, because the mean of its divisors is an integer number (21171667).

Almost surely, 2^102443525 is an apocalyptic number.

It is an amenable number.

102443525 is a deficient number, since it is larger than the sum of its proper divisors (24586477).

102443525 is an equidigital number, since it uses as much as digits as its factorization.

102443525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097751 (or 4097746 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 102443525 is about 10121.4388799222. The cubic root of 102443525 is about 467.9091140748.

Adding to 102443525 its reverse (525344201), we get a palindrome (627787726).

The spelling of 102443525 in words is "one hundred two million, four hundred forty-three thousand, five hundred twenty-five".